Leaf miners are very small insects, which go inside the leaves and make tunnels, due to which white stripes appear on the upper surface of the leaves, due to which serpentine tunnels appear on the leaves. Photosynthesis slows down in leaves affected by leaf miner, and after some time the leaves become weak and fall off.
Control: Destroy the affected leaves by separating them from the plants. To prevent this, spray Neemgold neem oil @ 1000 ml/acre or Bave Curv (Beauveria bassiana 5% WP) @ 500 gm/acre mixed in 200 litres of water.
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